Cooling element for blast furnaces



March 10, 1931. L. P. ROSS 1,795,446

COOLING ELEMENT FOR BLAST FURNACES Filed April 24. 1929 Patented Mar. 10, 1931 a UNITED STATES LEWIS r. ROSS, or NEW YORK, N. Y.

COOLING- ELEMENTFOR BLAS T FURNACES Application filed. April 24, 1929. Serial no. 357,655.

The invention comprises hollow formations or chambered bodies of suitable metal,

preferably removably inserted in proper spaced relationship in the walls of that part of the furnace, the temperature of which it is desired to control or modify. This chambered body is provided with inlet and discharge ports or openings both communicating directly with the outside atmosphere surrounding the furnace. The cooling medium is the air which is caused to circulate within the chamber formed in said body. This circulation is a natural thermal circulation. Each cooling element is a self-contained unit, requiring no auxiliary means for inducing a circulation of air therethrough.

Referring to the drawings which illustrate merely by way of example a suitable embodiment of my invention Fig. 1 is a view in perspective of the cooling element. V

Fig. 2 is a horizontal section of same.

Fig. 3 is a vertical cross-section on line 3, 3 of Fig. 2.

Fig. 4 is a fragmentary elevation of a furnace on a reduced scale, showing arrangement of cooling elements.

Fig. 5 is a fragmentary horizontal section of same.

Similar numerals refer to similar parts throughout the several views.

The heating elements 7 comprise chambered bodies of any suitable metal, either cast as integral bodies, or built up of separate elements, either of cast or pressed metal.

These elements 7 are incorporated in the furnace wall in proper spaced relationship, and through an area beginning preferably about two feet above the mantel plate and extending upwardly therefrom for such distance as may be required. These elements may if desired extend through the outer shell but preferably do not extend through the 5 inner lining so that the cooling effect of the cases may elements may be more evenly distributed to said lining.

These elements 7 are preferably made wedge-shaped for convenience of withdrawal from the furnace wall 8, when withdrawal is required for inspection, repair or replacement. Each element is preferably provided with a partition 9 extending the greater length of the chamber to divide the chamber 1 into communicating compartments 10 and 11. 00 One compartment 10 is provided in the front or outside wall 12 with an opening 13 for the inlet of air, while the other compartment 11 is provided with a similar opening 14 for the dischargingof air. The inlet 13 is preferably positioned in a plane below the outlet 14.

The front wall of each element 7 preferably projects through outer shell 15 of the furnace wall, and each element 7 has a reasonably close fit in the lining 8 of refractory material.

The advantages of the air cooled elements over the water cooled elements now in common use are as follows They are much less expensive to construct and install; no extensive piping being necessary.

The danger attending leaksis eliminated; for air leaking from the elements would not a be attended with any serious result; while leaking of water, the usual cooling medium, from a cooling element may result in serious injury to the furnace walls, causing chilling of materials passing through the furnace, suchas ore, coke, flux, etc., resulting in loss of fuel and serious disturbance to the furnace operation.

It will be understood that the partitions may be horizontal or vertical, or in some be dispensed with. The inlet of each element is preferably positioned in a plane below the plane of the outlet, so that the thermal action may contribute to the efficiency of air circulation. The natural circulation of the air may be relied upon for sufficient cooling action. That is, each cooling element is a self-contained unit.

The elements are so constructed as to be readily removed and replaced as required.

What I claim is A cooling element for blast furnaces, comprising a chambered body adapted to be in- 5 corporated in the furnace wall and having a partition extending from about the middle line of the front Wall of said body and ending short of its rear Wall thereby dividing the space Within the body intotwo connnu- 1Q nicating chambers, said body provided With inlet and outlet ports communicating direet- 1y With the outside atmosphere, the outlet port positioned above the plane of the inlet port.

LEWIS P. ROSS. 

